natural philosophy vs absorption

natural philosophy and absorption both are nouns.

Word	Noun	Adjective	Verb	Adverb
natural philosophy	Yes	No	No	No
absorption	Yes	No	No	No

natural philosophy (noun)	absorption (noun)
the science of matter and energy and their interactions	the mental state of being preoccupied by something
	complete attention; intense mental effort
	(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
	the process of absorbing nutrients into the body after digestion
	(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium
	the social process of absorbing one cultural group into harmony with another